West coast generally wetter and more midgey, north darker winters for longer and when weather hits it is serious but better prepared for. Central belt a bit more suburby in places but some glorious open spaces if you travel a little further from Ed/Gla corridor. Fife is obviously a great choice - stay centre/north for the best of it, south is ex-industrial or commuter suburban and east is tourist ridden and pricey but Cupar to the Tay is lovely and has great neighbours
Perth & Kinross is a good classic bet, covers a range of the above and well connected, avoid the overpriced bits and the too remote bits and anywhere else you'd be happy I reckon.
But the best way to find where you want is in your campervan, on a grand tour that goes round at least twice, once in high tourist/midge season and again in dead of winter. Like both in any one area and start looking for properties! I'd summer on the east coast as I hate tourist coaches and loathe midges but they love me. I'd winter on the west because I love isolated stunning scenery and don't need to go out anywhere to be happy. You get more daylight in the summer up north but a lot of dark and weather in the winter. Borders and D&G you get the scenic without so much isolation but if weather hits you can be just as stuck.
Jump in the van and head north, you won't regret it - twice round Scotland and when you park somewhere and don't want to leave, don't!
